Alnus crispa

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Noun1.Alnus crispa - North American shrub with light green leaves and winged nutsAlnus crispa - North American shrub with light green leaves and winged nuts
Alnus, genus Alnus - alders
alder tree, alder - north temperate shrubs or trees having toothed leaves and conelike fruit; bark is used in tanning and dyeing and the wood is rot-resistant
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An asterisk denotes that a species was encountered, while blanks indicate species that were not encountered Common Name Scientific Name 1977 1996 Balsam fir Abies balsamea * * Red maple Acer rubrum * Mountain maple Acer spicatum * * Mountain alder Alnus crispa * * Speckled alder Alnus rugosa * * Chuckley pear Amelanchier spp.
Zone F4 is characterized by a sharp drop in percentages of Picea to 2-15%, a rise in Alnus crispa from negligible values to 3-10%, and a large increase in pollen of herbs.
Quercus and Myrica remain common at 5-10%, and Alnus crispa rises to 10% at Splan Pond and Little Lake.
Zone T3 is characterized by decreases in Cupressaceae, Populus, and Quercus, as Alnus crispa (410%), Cyperaceae ([is greater than]5-35%), and herbs in general, rise.
Alnus crispa increased at 6000 yr BP, but the simultaneous increase in Picea mariana found at most sites in the Yukon was not present at Sulphur Lake.
Alnus crispa s'est repandu il y a environ 6000 ans B.P.